EP 0350262 A1 19900110 - Supporting a radiation shield in a magnetic resonance magnet.

Title (en)

Supporting a radiation shield in a magnetic resonance magnet.

Title (de)

Stützvorrichtung einer Strahlungsabschirmung in einem Magnetresonanz-Magneten.

Title (fr)

Support d'un écran de radiation dans un aimant à résonance magnétique.

Publication

EP 0350262 A1 19900110 (EN)

Application

EP 89306782 A 19890704

Priority

US 21511188 A 19880705

Abstract (en)

A low thermal conductance support for a radiation shield (65) in a magnetic resonance magnet (11) is provided. Spacer means (111,117) are situated partially in apertures in a cylindrical coil form (25) having superconducting windings (17-22) supported from a vacuum vessel (15). The spacer means are spaced away from the aperture walls and are secured by sleeves (115) at one end to the coil form (25). The spacer means (111,117) protrude radially beyond the coil form surface and contact a radiation shield (65). The length of each spacer means (111,117) is greater than the distance between the surface of the coil form and shield thereby increasing the thermal conduction path length between form and shield. Axial spacer means (121) axially spacing the coil form from the shield are also provided.

IPC 1-7

H01F 7/22

IPC 8 full level

G01R 33/20 (2006.01); A61B 5/055 (2006.01); G01R 33/3815 (2006.01); G01R 33/48 (2006.01); H01F 7/20 (2006.01); G01R 33/38 (2006.01)

CPC (source: EP US)

G01R 33/3815 (2013.01 - EP US); G01R 33/3802 (2013.01 - EP US)

Citation (search report)

[A] EP 0156017 A1 19851002 - SIEMENS AG [DE]
[A] EP 0251342 A2 19880107 - OXFORD MAGNET TECH [GB]
[A] EP 0144171 A1 19850612 - OXFORD MAGNET TECH [GB]
[A] EP 0118807 A2 19840919 - GEN ELECTRIC [US]
[AP] US 4768008 A 19880830 - PURCELL JOHN R [US], et al

Designated contracting state (EPC)

DE FR GB NL

DOCDB simple family (publication)

EP 0350262 A1 19900110; EP 0350262 B1 19930623; DE 68907276 D1 19930729; DE 68907276 T2 19940217; IL 90670 A0 19900118; IL 90670 A 19920715; JP H0284936 A 19900326; JP H0418853 B2 19920327; US 4935714 A 19900619

DOCDB simple family (application)

EP 89306782 A 19890704; DE 68907276 T 19890704; IL 9067089 A 19890620; JP 17206689 A 19890705; US 21511188 A 19880705